Defensive publication

ABSTRACT

NONAQUEOUS DISPERSIONS OF ACRYLIC THERMOSETTING RESINS ARE MODIFIED WITH A COMPATIBLE CELLULOSE ACETATE BUTYRATE TO PROVIDE COATING COMPOSITIONS HAVING IMPROVED FLOW OUT AND PIGMENT CONTROL. THE CELLULOSE ACETATE BUTYRATE HAS A BUTYRYL CONTENT OF FROM ABOUT 35 TO 55% BY WEIGHT, A HYDROXYL CONTENT OF FROM ABOUT 0.2 TO ABOUT 5% BY WEIGHT, AN ACETYL CONTENT OF LESS THAN 3% AND A VISCOSITY OF FROM ABOUT 0.001 TO ABOUT 0.015 SECONDS. THE CELLULOSE ACETATE BUTYRATE IS DISSOLVED IN A SOLVENT AND MIXED WITH THE NONAQUEOUS DISPERSION SO THAT THE CELLULOSE ACETATE BUTYRATE IS PRESENT IN AN AMOUNT OF FROM ABOUT 0.1 TO ABOUT 20% BY WEIGHT, BASED ON THE WEIGHT OF THE SOLIDS IN THE NONAQUEOUS DISPERSION.



